National Observational Study On The Use Of Inflectra™ An Infliximab Biosimilar In Real Life

PGA was evaluated in participants with RA, SpA and PA on a 0 to 10 centimeter (cm) visual analog scale (VAS), with 0 cm = no disease activity and 10 cm = worst disease activity possible. Higher scores indicated worse condition.

Mean dose (in milligrams [mg]) administered was sum of dose of all infusions administered divided by total number of doses administered.

Mean posology administered was sum of posology of all infusions administered divided by total number of infusions administered. Posology = dose (mg) / weight (kg).

Cumulative dose is the sum of doses administered during inclusion visit to month 6, 12, 18, and 24.

Mean infusion time was sum of duration of all infusions administered divided by total number of infusion times administered.

Mean post-infusion monitoring at hospital was sum of duration of all monitoring at hospital divided by total number monitoring times.

DAS28 score was evaluated in participants with RA and PA. DAS28 is calculated from the number of swollen joints (SJC) and painful joints (PJC) using the 28 joints count, the erythrocyte sedimentation rate (ESR) (in millimeters per hour [mm/hour]) and participant's global assessment (PtGA) of disease activity (participant rated arthritis activity assessment with scores ranging 0 to 10; higher scores indicated high disease activity). DAS28 was calculated as 0.56 sqrt (DAS 28 tender joint count) + 0.28 sqrt (DAS 28 swollen joint count) + 0.70 ln(ESR [mm/first hour] + 0.014 (PtGA [mm]). Total score range: 0-9.4. DAS 28 score <=2.6 indicated "remission in disease", score between >2.6 and <=3.2 indicated "mildly active disease", score between >3.2 and <=2.6 indicated "moderately active disease", and score >5.1 indicated "very active disease". Absolute variation = mean result of laboratory test during period in question - result of laboratory test at baseline.

BASDAI is a set of 6 questions to determine disease activity in participant with SpA. Participants answered each 6 questions on a scale of 0 (no problem) to 10 (the worst problem). The BASDAI score is calculated by computing the mean of questions 5 and 6 and adding it to the sum of questions (Q) 1-4. This score is then divided by 5. BASDAI score = (Q1 + Q2 + Q3+ Q4+ [Q5 + Q6/2])/5. BASDAI score ranges from 0 (best) to 10 (worst), where higher scores meant worse condition. BASDAI score >4 indicated "SpA active", and score <=4 indicated "SpA inactive". Absolute variation = mean result of laboratory test during period in question - result of laboratory test at baseline.

BASFI is a set of 10 questions to determine degree of functional limitation in participants with SpA. Participants answered each 10 questions on a scale of 0 (no functional impairment) to 10 (maximal impairment). BASFI score was calculated as mean of scores from 10 questions. BASFI score ranged from 0 (no functional impairment) to 10 (maximal impairment), where higher scores meant worse condition. Score >4 indicated "significant functional impairment", and score <=4 indicated "mild functional impairment". Absolute variation = mean result of laboratory test during period in question - result of laboratory test at baseline.

Mayo score was evaluated in participants with UC. Mayo score consists of 4 items (stool frequency, rectal bleeding, findings of endoscopy, physician global assessment), each graded from 0 (no severity) to 3 (maximum severity), with higher scores indicating more severe disease. Total score was sum of 4 items resulting in a score range of 0 (no severity) to 12 (maximum severity), where higher score indicated increased severity. Score <=2 indicated "UC inactive", score between >=3 and <=5 indicated "mild UC", score between >=6 and <=10 indicated "moderate UC", and score >11 indicated "severe UC". Absolute variation = mean result of laboratory test during period in question - result of laboratory test at baseline.

PUCAI score was intended for pediatric participants with UC. PUCAI had 6 items with scores as: abdominal pain (no pain =0, pain can be ignored =5, pain cannot be ignored =10); rectal bleeding (none =0, small amount only [in less than 50% of stools] =10, small amount with most stools =20, large amount [>50% of the stool content] =30); stool consistency of most stools (formed =0, partially formed =5, completely unformed =10); number of stools per 24 hours (0-2 =0, 3-5 =5, 6-8 =10, >8 =15); nocturnal stools (no =0, yes =10); activity level (no limitation of activity =0, occasional limitation of activity =5, severely restricted activity =10). PUCAI score = sum of scores of 6 items; score range of 0= no severity to 85= extreme severity. PUCAI score <10: UC in remission, score between >=10 and <35: mild UC, score between >=35 and <65: moderate UC, and score >=65: severe UC. Absolute variation = mean result of laboratory test during period in question - result of laboratory test at baseline.

UCEIS score was evaluated in participants with indication UC. It had 3 sub-scales: endoscopic vascular pattern (scored 0 [normal pattern] to 2 [complete obliteration of vascular pattern]), bleeding (scored 0 [none] to 3 [luminal moderate or severe]), erosions and ulcerations (scored 0 [none] to 3 [deep ulcers]). UCEIS total score was calculated by sum of all 3 sub-scale scores. Total score ranged from 0 (remission in disease) to 8 (extreme severity of disease), with higher scores indicating more severe disease. Absolute variation = mean result of laboratory test during period in question - result of laboratory test at baseline.

Harvey-Bradshaw score was evaluated for indication CD. Harvey-Bradshaw measures 5 parameters; general well-being (0= very well to 4= terrible), abdominal pain (0= none to 3= severe), number of liquid stools per day (0 to no maximum score), presence of an abdominal mass on physical exam (0= none to 3= definite and tender), and whether there are any complications (0= no complications, 1= arthralgia, 2= uveitis, 3= erythema nodosum, 4= aphthous ulcer, 5= pyoderma gangrenosum, 6= anal fissure, 7= new fistula, 8= abscess). Total HBI score: sum of all 5 individual parameters, minimum score is 0 and there was no pre-specified maximum score as it depended on number of liquids stools. Higher HBI scores = greater disease activity score <4 indicated "Inactive disease", score >=4 and/or <=12 indicated "Active disease", and score >12 indicated "Very active disease". Absolute variation = mean result of laboratory test during period in question - result of laboratory test at baseline.

CDEIS is an index for determining the severity of CD with endoscopic localization to ileum and colon. CDEIS considered 4 parameters: deep ulcerations, superficial ulcerations, ulcerated and non-ulcerated surface, and the presence of ulcerated/non-ulcerated stenosis. These 4 parameters were evaluated in 5 pre-defined segments of the colon (ileum, ascending colon, transverse colon, descending colon and sigmoid loop, and rectum). CDEIS score ranged from 0 (no lesions) to 44 (severe lesions) where higher scores indicate more severity. CDEIS score <=7 indicated "Endoscopic remission", and score >7 indicated "Absence of endoscopic remission". Absolute variation = mean result of laboratory test during period in question - result of laboratory test at baseline.

The global disease assessment by the physician for participants with RA, SpA and PA was evaluated on a 0 to 10 cm VAS, with 0 cm = no disease activity and 10 cm = worst disease activity. Higher scores indicated worse condition. Absolute variation = mean result of laboratory test during period in question - result of laboratory test at baseline.

Fatigue score was evaluated among participants with RA, SpA, and PA. Participants' fatigue severity was measured on a VAS with a score range of 0 (no fatigue) to 10 (highest level of fatigue). Higher score signifies more severity. Absolute variation = mean result of laboratory test during period in question - result of laboratory test at baseline.

SDAI was evaluated in participants with indication RA. SDAI is the numerical sum of 5 parameters: TJC and SJC based on a 28-joint assessment, PtGA and PGA assessed on 0 (very well) -10 cm (worst) VAS; higher scores = greater affection due to disease activity, and C-reactive protein (CRP) (mg/dL). SDAI total score =0 (no disease) to 86 (extreme severity of disease), where higher scores indicated higher disease activity. SDAI score <=3.3 indicated "achievement of remission state", score >3.3 and/or <=11 indicated "mildly active state", score >11 and/or <=26 indicated "moderately active state", and score >26 indicated "very active state". Absolute variation = mean result of laboratory test during period in question - result of laboratory test at baseline.

HAQ score was evaluated for indication RA. HAQ assesses degree of difficulty participant had experienced during past week in 8 domains of daily activities: dressing \& grooming, arising, eating, walking, hygiene, reach, grip and other activities. For each question in questionnaire, level of difficulty was scored from 0 (no difficulty) to 3 (unable to do). Any activity requiring assistance from another individual or required use of assistive device would adjust to minimum score of 2 to represent more limited functional status. Overall score = sum of scores divided by number of domains answered. Total possible score range was 0 (no difficulty) to 3 (unable to do). Higher score = more difficulty in performing daily living activities. HAQ score >0.5 indicated "Existence of functional disability" \& HAQ score <=0.5 indicated "Absence of functional disability". Absolute variation = mean result of laboratory test during period in question - result of laboratory test at baseline.

ASDAS score was evaluated for indication SpA. It is a score combining the assessment of overall pain (Q1), duration of morning stiffness (Q2), peripheral pain/swelling (Q3), PtGA (assessed on a sale of 0 [not active] to 10 [very active]), and CRP in mg/L. ASDAS total score ranged from 0 (no disease) to 10 (maximum severity), higher score indicates greater severity of disease and was derived using the following formula: ASDAS =0.12*Q1 + 0.06*Q2 + 0.11* PtGA + 0.07*Q3 + 0.58*ln (CRP+1). ASDAS score <1.3 indicated "SpA inactive", ASDAS score >=1.3 and/or <2.1 indicated "SpA mildly active", ASDAS score >=2.1 and/or <=3.5 indicated "SpA moderately active", and ASDAS score >3.5 indicated "SpA very active". Absolute variation = mean result of laboratory test during period in question - result of laboratory test at baseline.

Cook-Medley questionnaire, also called cynical distrust scale, contained 8 items, scoring from 0 (trust) to 4 (no trust). The total score of the questionnaire was calculated by adding together the scores for the 8 items. Total possible score range was from 0 (trust) to 32 (no trust), higher score signifies greater cynical distrust. This outcome measure was evaluated in participants who were informed of a switch from infliximab reference to Inflectra.

The questionnaire on stress after the switch to the biosimilar contained 3 items (emotional reactivity, repetition syndrome and tendency to avoid), each scored from 0 (no stress) to 4 (extreme stress). The overall score of stress was calculated by adding together the scores for the 3 items, ranged from 0 (no stress) to 12 (highest level of stress), higher scores indicated greater levels of stress. This outcome measure was evaluated in participants who were informed of a switch from infliximab reference to Inflectra.

GAD7: questionnaire of anxiety with 7 items, scoring from 0 (no anxiety) to 3 (extreme anxiety). The total GAD7 score was calculated by adding together the scores for the 7 items, ranged from 0 (no anxiety) to 21 (extreme anxiety), higher scores indicated severe anxiety. This outcome measure was evaluated in participants who were informed of a switch from infliximab reference to Inflectra.

Trough level was plasma concentration of drug before infusion.

Trough level was plasma concentration of drug before infusion.

Trough level was plasma concentration of drug before infusion. In this outcome measure mean of all IFX-TLs for all infusions occurring during specified duration is reported.